Irrigation systems with watertight coverage set systems have extruded aluminum pipes with knuckle-female couplers smelted by gravity casting with aluminium alloy L-2520. The welding is done with the MIG process.
In the female part it is incorporated an assembly formed by a hook tightener and a handle and located 180º from this handle and in the same female there is a bridge (hook) where we will place the stub from the knuckle coupler. In the other stub from the knuckle coupler part located at a distance of 180º from the previous one we will lock the hook tightener and by a handle set from this we will do the closing.
Inside the female there is placed an o-ring, that when we close the system it compresses and makes the hermeticism possible.